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I've had a TOSHIBA Satellite for the past 5 years running WinXP pro. I get 2h on battery so it is consistent with what you are experiencing. What kills laptop batteries is the memory effect. If you run your laptop on battery every day then end up pluging it in the power at the office when the battery is 75% discharged let's say, ove time you will develop a memory effect. So when your laptop next reaches 25% full on battery it will drop down to 0% instantly, that's why it is better to run it down before recharging it. Your battery will last longer. Keep this in mind for your next battery. Nothing you can do about this one now.
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